Receptacles – Closures – Removable closure retained by adhesive or fusion means
Patent
1994-03-31
1995-08-08
Shoap, Allan N.
Receptacles
Closures
Removable closure retained by adhesive or fusion means
220256, 220276, 2291231, 22912535, B65D 4100, B65D 5118
Patent
active
054391326
ABSTRACT:
A tray having a peripheral flange with one or more raised ledges to secure a pair of membranes to enclose the tray. A lower membrane may be attached to a first ledge of the flange. An upper membrane may be attached to a second ledge or a recessed lip of the flange without connection to the lower membrane, except through the tray. The two attachment surfaces may be separated by a trough or by being positioned on different levels to facilitate trimming of the upper membrane in a continuous manufacturing process. In one embodiment, each membrane may bear one or more selected labels. The upper membrane may, for example, bear a label intended for a retail operator, while the lower membrane bears a label designed for an ultimate purchaser of the packaged product. In another embodiment, the lower membrane has a higher permeability, and the upper membrane has a lower permeability. In this embodiment, a desired gaseous environment may be maintained within the package. When it is desired to change the gaseous environment, the upper (less permeable) membrane may be peeled away allowing gaseous communication through the lower (more permeable) membrane.
REFERENCES:
patent: 2880859 (1959-04-01), Tupper
patent: 3344974 (1967-10-01), Bostrom
patent: 3391847 (1968-07-01), Christine et al.
patent: 3552634 (1971-01-01), Ollier
patent: 3561668 (1971-02-01), Bergstrom
patent: 4055672 (1977-10-01), Hirsch et al.
patent: 4555043 (1985-11-01), Bernhardt
patent: 4555056 (1985-11-01), Bernhardt
patent: 4738374 (1988-04-01), Ingemann
patent: 4939332 (1990-07-01), Hahn
patent: 4991717 (1991-02-01), May et al.
patent: 5348752 (1994-09-01), Gorlich
Caretto Vanessa
Shoap Allan N.
World Class Packaging Systems, Inc.
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